Fire Protection for Residential Properties

Fire protection is an essential aspect of building safety as fires spread quickly through a building and pose a significant risk to occupant lives.
In accordance with Approved Document B Volume 2 (2019 edition incorporating 2020/22 amendments), combustible materials have been banned in and on the external walls of buildings in the following instances;

• Residential Buildings over 11m (England & Wales)
• Recreational & Assembly Buildings over 18m
• Buildings over 11m (Scotland)
• Any buildings undergoing unsafe cladding remediation work

Where residential apartment buildings fall within these criteria, non-combustible ducting is required to prevent the spread of fire through ventilation systems where the ventilation ductwork terminates through the building façade.

A1 Rated Ductwork Quote

Fire Protection for Residential Properties

A1 Rated Ductwork

The fire resistance classification criteria for construction products is detailed in BS EN 13501w+ A1:2018 and includes a list of products (European Commission 96/603/EC) which, under specified conditions, can be considered to be class A1 without testing.

Galvanized steel achieves a fire class A1 rating without the need for testing. This material maintains its strength at elevated temperatures, (melting point range of 1450-1520°C). Classified as A1, it is defined as non-combustible.

Pinnacle's A1 Rated Non-Combustible ducting is manufactured from 0.9mm hot dipped galvanised mild steel and is sufficient to provide A1 classification for the purposes of ductwork terminating through the façade of the building.

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What is A1 non-combustible ducting?

A1 non-combustible ducting, also referred to as A1-rated ductwork or A1 fire-rated ventilation refers to a type of ducting that has been classified as fire class A1, indicating it does not contribute to the spread of fire.

How is A1 non-combustible ducting classified?

The classification is based on European standards, particularly in accordance with the European Commission paper 96/603/EC and standards like BS EN 13501-1:2018.

Where is Non Combustible ducting required?

In accordance with Approved Document B Volume 2 (2019 edition incorporating 2020/22 amendments), combustible materials have been banned in and on the external walls of buildings in the following instances;

Residential Buildings over 11m (England & Wales)
Recreational & Assembly Buildings over 18m
Buildings over 11m (Scotland)
Any buildings undergoing unsafe cladding remediation work

Made to Order Duct

Like all HVAC ducting, all components are made to order based on drawings provided for the project.

Pinnacle specialise in fabricating products based on specifications provided. A1 non-combustible ducting is required where the duct runs through the building cavity out to the external termination point for typical ventilation systems such as MVHR. The duct run can be straight or dropped down to meet the designed termination position.

client drawing - 220x90mm plastic duct to A1-rated ductwork to fire rated airbrick termination

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A1 Fire Rated Airbrick

A1 fire classification airbricks are used in conjunction with A1 non-combustible ducting for residential ventilation systems (MVHR) terminations,

The Air Shop are pleased to be an approved re-seller of the market leading Domus Solis A1-rated airbrick which can be used in conjunction with A1 non-combustible ducting as a full solution for residential applications.

Domus Solis Airbricks are available in a rangle of RAL colours and sizes including 220 x 90mm, 204 x 60mm and 220 x 136mm.

Domus Solis Fire Rated Airbrick

A1 Rated Duct Quotation

If you have a requirement for A1 Non-combustible ducting and fire-rated airbricks, send your drawings, or call to discuss your specific requirements.
(033 0223 4190 for Pinnacle Ductwork)

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How is A1 Non Combustible ducting used in an application or installation?

For residential ventilation systems such as MVHR (mechanical ventilation with heat recovery), plastic ducting is directly connected to A1 Non-Combustible ducting through the building cavity to the external termination point. This is typically from the slab level, through the cavity wall and then can be dropped to meet the desired termination position in the façade wall.

What is A1 non-combustible ducting manufactured from?

Pinnacle A1 Rated Non-Combustible Ducting Products are manufactured from 0.9mm hot dipped galvanised mild steel and is sufficient to provide A1 classification for the purposes of ductwork terminating through the façade of the building.

Galvanized steel is defined as non-combustible and achieves a fire class A1 rating without the need for testing. The fire resistance classification criteria for construction products is detailed in BS EN 13501w+ A1:2018 and includes a list of products (European Commission 96/603/EC)

Does A1 non-combustible ducting require special installation considerations?

A1 Non-combustible ducting must be installed using intumescent sealant.

Can A1 non-combustible ducting be customised for specific project requirements?

A1 non-combustible ducting is bespoke to the requirements of the ventilation system design and terminations points in the facade of the building.